Alfred swan



(No Model.)

A. SWAN.

DEVIGE FOR FORMING SOCKETS FOR CARBON POINTS.

' No. 264,970. Patented Sept. 26, 1882,]

JJIIIII UNITED STATES PATENT OFFICE.

ALFRED SWAN, on GATESHEAD,

COUNTY OF DURHAM, ENGLAND.

DEVICE FOR FORMING SOCKETS FOR CARBON POINTS.

SPECIFICATION forming part of Letters Patent No. 264,970, datedSeptember 26, 1882,

Application filed July 20, 1882. (No model.) Patented in England June19, 1882, No. 2,898.

To all whom it may concern:

Be it known that I, ALFRED SWAN, a subject of the Queen of GreatBritain, and residing in the borough of Gateshead, in the county ofDurham, England, have invented certain improvements in and apparatus forforming the ends of wires into sockets for the reception of the carbonsof incandescent electric lamps, (for whichI have obtained a patent inGreat Britain, No. 2,898, dated 19th June, 1882,) of which the followingis a specification.

My invention relates to apparatus for etfecting the coiling or twistingof the ends of the terminal wires forincandescent electric lamps, so asto form them into a socket or equivalent form for the reception of thecarbon filament of the lamp.

Figure l of the drawings represents in sectional elevation an apparatusconstructed according to my invention, and Fig. 2 is a partial-end viewof the same.

In a tubular piece, q, carried by the standard g is mounted a spindle ormandrel, 1', capable of being rotated in the said tubular piece q bymeans of the handle W. The said spindler has projecting from its end aneedle, W, of the size and, shape (tubular, flat, or other shape of thecarbon to be inserted in the ends of the terminal wires. The end of thespindle is tapped to receive a stock-piece or nipple in which the needleis mounted. Needles, when broken, can then be easily replaced, or afresh stock-piece, carrying a needlc of any convenient s:ze or shape,can be introduced. A clip-piece, s, is centered at s to the spindle 1',being furnished with a tailpiece, s engaging behind the flange q of thetubular piece q, so that as the spindle r is forced back by the springtthe end of the said catch-piece a presses upon the root end of theneedle 1*. By pressing forward the spindle 1' against the spring tthecatch sis lifted off the needle, and the tip of the end of the wire tobe coiled flattened and cut into the form shown in Fig. 3 is placed uponthe needle r so that when the spindle r is released and again forcedback by. the spring t the clip-piece s pinches the said tip of theflattened end of the wire down upon the needle. On rotating the spindler by the handle r and keeping the flattened end of the wire at therequisite angle to the said needle the said flattened end is coiled uponthe needle into a tubular or other form suitable for the reception ofthe ends of the carbon filament.

[ I may attach to the stand of the apparatus an adjustable arm upon anupright support, and with a slot in it, which, when the arm is in itsproper position, acts as a. guide to the wire while it is being coiledround the needle.

I prefer to act upon'the wires in this apparatus when they are embeddedin the glass stem, as shown in Fig. 4,- which represents the wires ashaving been coded by the apparatus. The apparatus may be provided with asurface, a, upon which to rest the said stem while the apparatus isoperating.

Fig. 5 shows a modification wherein the spring t is dispensed with, andthe catch 8 is provided with a thumb-piece, 8 to be depressed againstthe spring 8*" for raising the tip of the catch-piece s from the needleT In this modification I have also shown the spindle r as being providedwith a screw-thread, 2;, working in a screw in the tubular piece q, thenumber of turns of this screw corresponding with the number of coils tobe given to the ends of the wires, so as to preven toverwinding.

Thejunction of the wires and carbons may be completed by deposition ofcarbon in the ordinary manner.

1 claim as my inventionl. The combination of the needle, the rotatingsupport therefor, and the catch-piece, substantially as described.

2. The apparatus for coiling or twisting the ends of wires ofincandescent electric lamps into flat, cylindrical, or other sockets forthe reception of the carbon filament, the said apparatns consisting inthe combination of the spindle 1', carried in the standard (1 andprovided with means for rotating it, and also with a catch-piece, s, forretaining and releasing the wire, as describel and illustrated.

3. The combination of the spindle having a slightlongitudinal motion,the needle carried in the end thereof, the spring, and the catchpiece sosupported and arranged that its pressurc is released when the spindleismoved back and restored when the spindle is returned-by said spring,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

, ALFRED SWAN. Witnesses:

R0131. SPENoE WA'rsoN, Solicitor, Newcastle-on-Tyne.

R. W. JOHNSON, Clerk to U. S. Consul, Neu'castZc-on-Tym.

